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3 years ago

The cart is initially at rest. Force

Physics

1 answer:

Oliga [24]3 years ago

5 0

Answer:

$v'=\dfrac{1}{2}v$

Explanation:

Given that,

Initial speed of the cart, u = 0

Let F force is applied to the cart for time $\Delta t$ after which the car has speed v. The force on an object is given by :

F = ma

m is the mass of the cart

We need to find the speed of second cart, if the same force is applied for the same time to a second cart with twice the mass. Force becomes,

$F=\dfrac{mv'}{t}$

$v'=\dfrac{F t}{2m}$

$v'=\dfrac{1}{2}v$

So, the speed of second cart is half of the initial speed of first cart. So, the correct option is (b).

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A rock is thrown upward with a velocity of 22 meters per second from the top of a 25 meter high cliff, and it misses the cliff o

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Answer:

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3 years ago

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Mr. Miles zips down a water-slide starting at 15 m vertical distance up the scaffolding. Disregarding friction, what is the velo

lilavasa [31]

Answer:

The velocity of the Mr. miles is 17.14 m/s.

Explanation:

It is given that,

Mr. Miles zips down a water-slide starting at 15 m vertical distance up the scaffolding, h = 15 m

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